Underwater tow水下拖曳underwateradj.在水中生长的；水下的adv.在水下underwater weapons simulation system水中武器仿真系统underwater multi-objective defense水下多目标防御underwater acoustic FH communication水声跳频通信underwaternon-dispersible concrete水下不分散混凝土Underwater Acoustic Data Acquisition水声数据采集underwater sound measuring equipment水声测量设备underwater bottom-sealing concrete水下封底混凝土underwater multi-axis force sensor水下多轴力传感器Underwater acoustic signal detection水声信号检测underwater magnetic mine-dectector磁性探雷器